Well-drilling apparatus



Sept 27 F. A. PHILBRICK WELL DRILLINGAPPARATUS} Filed Nov. 1925 INVENTORJ H. PHILBRIBK .Patented Sept. 13, 1927. r

,fUNI TEDf sT-ATE rnEnA-P HILBRIoK, or'sANTA'onUz, CALIFORNIA.

WELLDRILLING APPARATUS.

i Application filed November This invention .relatesto improvements in well' d'rilling apparatus, and has particular reference to means for; gripping the drilling cable. f.

Theprincipal object; 'ofthis invention is to, provide means for gripping a drilling cable 1 which; means will 'eliminate'the customary slippage, between the cable and the hoisting mechanism. I I

Another; object isto produce a cable grippin means which may be attached to any ordinary drilling rig now in use without altering the construction of the same.

" A furtherobject is to produce a device v of this character which is simple in construc- I tion and therefore cheap to manufacture.

' A still further object is to provide means whereby the gripping will be sufficiently secure to permit jerking without slippage.

Other objects and advantages will be apparent during the course of the following description. V

In the accompanying drawings forming a part of this specification'and in which like numerals are employed to. designate like parts throughout the same,

F'gure I is a side elevation of a cable clamp having my runner clamps mounted,

- therein, a i

Figure II is. a top plan view of my runner clamps, a f 1 I Q 1 i Figure III is a sideelevationof Figure II, Figure IV is a side elevation of one of the halves of my runner clamp, and as ing my runner-clamp in engagement with a Figure V is'a vertical cross-section'showcable.

'. In the drilling of oil wells and the like deep wells, adrilling toolv weighing a considerable amount is attached to the endof the cable, which cable is lowered into-the well. A rig positioned adjacent the well has a rocker beam to which is attached by means of a chain or similarmeans, aclamp which clamp is in turn adapted to engage the cable extending into the wells The rockerbeam when actuated causes thecable to be reciprocat-ed in-the well so as to cause the drill to belifted an'dloweredlu V As the well deepens, the rocker beam is stopped and a new grip takenruponfth'e cable the cable being lowered sufliciently to com pen'sate for .the increased depth, of the well.

Itis the connection between the cable and the "clamp carried by the rocker beam "that I has given considerabletrouble due" to the 4,1925. :Serial No. 66,802.

slippage caused bythe weight of cable.

andits attached parts.

I have sought to overcome this slippage by providing a new form of runner clamp to] be inserted in the main clamp, which runner clamp is provided with a facing. of

softer metal than that forming the cable, and by referring to the drawings it will be noted that the numerals 5 and 6 designate links of a chain connected to the rocker' beam, while the numeral 7 designates the cable extending into the well being drilled.

Supported from the links 5 and 6 as by horns 8 and 9, are clamp sections 11 and 12, respectively. These clamp sections are pivoted together so as to be easily clamped around the cable and are provided with out wardly extending cars 13 and 14;.

The car .13 carries guide pins 16 upon which a blockj 17 is adapted, to be moved; This block has passing there-through a screw 18 to which is attached a handle 19. The end of this screw bears against theear 13.

a At 21 Ifhaveshown a yoke pivoted to the block 17 ,which yoke is adapted to straddle the ears 13and 14 and has the handle 22 for Y the purpose'of manipulating the same.

The construction thus far described relates to all standard well drilling operations. At the present time, slip clamps areemployed within the main clamp the same being'merely plain castings of a conformation similar to that illustrated in Figure II. It

is these clamps that I improve by providing them with a soft lining 23. The two halves of the slip clamp are designated by the numerals 24 and 26. A head 27 is formed upon each so as to retain the same within the clamp'sections 11 and 12. i

By viewing Figures IV and V, it will be noted thatthe lining 23 is'flowedonto the ened condition.- This rough condition fur ther assists in malntalning'a grip between brass rod-,on'e end of which is connected to rod into contact with the clamp section which isalso connected to an electric cable with the result that an arc occurs and vthe brass rod is melted onto the surface of theclamp sect-ion.

Referring to Figure V,J'it willbe, noted .clamp section as for inst'ance, the clamp section 24, vthereby leaving the same in a roughin'wnlion inn'nwii h shown and (iLRCliiltli is ('0 ho when as :1 preferred, exmnpic of the same and that various changes in the shape, size and ai'rnngel'nont of parts may be resorted to without departing from the spirit of the invention 0 the scope of the subjoined claim.

Having thus dencrihod my invention, .1: (iililll zin n (:hnnp, :1 pair of vlongutod coopera- (iwly nwovizi'iod svnii-vii'cnlm' invnihois Inwing the canal tI'L)HS--t5((iiii0llfli :u'on throughout {heir lein gth, :l iillll' flown-Ml. in each se1ni- (.ii'CUliH' lllullliml In flowing iho sumo thoioin whereby n i'onghonvcl surface Will ho provided on the inner vain-Taco of said iining, and mid iinm being of u sofiei' material than the material forming tho svlni-uii'cuhu' members.

In testimony whereof ii :ifiix my sigimtin'e.

'FI-IIGI) A. PHIIJB'IHCK. 

